From b03273772744b263ae5c06de8034ec2200245964 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Micha=C5=82=20G=C3=B3rny?= <mgorny@gentoo.org>
Date: Wed, 21 Dec 2011 17:10:17 +0100
Subject: Support checking for ignored CFLAGS using -frecord-gcc-switches.

---
 bin/misc-functions.sh | 40 ++++++++++++++++++++++++++++++++++++++++
 cnf/make.conf         |  3 +++
 man/ebuild.5          |  9 +++++++++
 man/make.conf.5       |  4 ++++
 4 files changed, 56 insertions(+)

diff --git a/bin/misc-functions.sh b/bin/misc-functions.sh
index 358288932..b536a63e9 100755
--- a/bin/misc-functions.sh
+++ b/bin/misc-functions.sh
@@ -308,6 +308,46 @@ install_qa_check() {
 			sleep 1
 		fi
 
+		# Check for files built without respecting CFLAGS
+		if [[ "${CFLAGS}" == *-frecord-gcc-switches* ]] && [[ "${PN}" != *-bin ]] ; then
+			qa_var="QA_DT_SWITCHES_${ARCH/-/_}"
+			eval "[[ -n \${!qa_var} ]] && QA_DT_SWITCHES=(\"\${${qa_var}[@]}\")"
+			f=$(scanelf -qyRF '%k %p' -k \!.GCC.command.line "${ED}" | sed -e "s:\!.GCC.command.line ::")
+			if [[ -n ${f} ]] ; then
+				echo "${f}" > "${T}"/scanelf-ignored-CFLAGS.log
+				if [ "${QA_STRICT_DT_SWITCHES-unset}" == unset ] ; then
+					if [[ ${#QA_DT_SWITCHES[@]} -gt 1 ]] ; then
+						for x in "${QA_DT_SWITCHES[@]}" ; do
+							sed -e "s#^${x#/}\$##" -i "${T}"/scanelf-ignored-CFLAGS.log
+						done
+					else
+						local shopts=$-
+						set -o noglob
+						for x in ${QA_DT_SWITCHES} ; do
+							sed -e "s#^${x#/}\$##" -i "${T}"/scanelf-ignored-CFLAGS.log
+						done
+						set +o noglob
+						set -${shopts}
+					fi
+				fi
+				# Filter anything under /usr/lib/debug/ in order to avoid
+				# duplicate warnings for splitdebug files.
+				sed -e "s#^usr/lib/debug/.*##" -e "/^\$/d" -e "s#^#/#" \
+					-i "${T}"/scanelf-ignored-CFLAGS.log
+				f=$(<"${T}"/scanelf-ignored-CFLAGS.log)
+				if [[ -n ${f} ]] ; then
+					vecho -ne '\n'
+					eqawarn "${BAD}QA Notice: Files built without respecting CFLAGS have been detected${NORMAL}"
+					eqawarn " Please include the following list of files in your report:"
+					eqawarn "${f}"
+					vecho -ne '\n'
+					sleep 1
+				else
+					rm -f "${T}"/scanelf-ignored-CFLAGS.log
+				fi
+			fi
+		fi
+
 		# Check for files built without respecting LDFLAGS
 		if [[ "${LDFLAGS}" == *,--hash-style=gnu* ]] && [[ "${PN}" != *-bin ]] ; then
 			qa_var="QA_DT_HASH_${ARCH/-/_}"
diff --git a/cnf/make.conf b/cnf/make.conf
index ef570bcb4..aecb6336f 100644
--- a/cnf/make.conf
+++ b/cnf/make.conf
@@ -32,6 +32,9 @@
 # package (and in some cases the libraries it uses) at default optimizations
 # before reporting errors to developers.
 #
+# If your gcc supports it, you can add -frecord-gcc-switches in order to enable
+# CFLAGS ignorance checking for ebuilds.
+#
 # Please refer to the GCC manual for a list of possible values.
 #
 #CFLAGS="-O2 -pipe"
diff --git a/man/ebuild.5 b/man/ebuild.5
index 2d58c9e61..1216ac171 100644
--- a/man/ebuild.5
+++ b/man/ebuild.5
@@ -602,6 +602,15 @@ This should contain a list of file paths, relative to the image directory, of
 files that contain writable and executable segments.  These are rare.
 The paths may contain fnmatch patterns.
 .TP
+\fBQA_DT_SWITCHES\fR
+This should contain a list of file paths, relative to the image directory, of
+files that do not contain .GCC.command.line sections. The paths may contain
+regular expressions with escape\-quoted special characters.
+.br
+This variable is intended to be used on files of binary packages which ignore
+CFLAGS variable.
+.TP
+.TP
 \fBQA_DT_HASH\fR
 This should contain a list of file paths, relative to the image directory, of
 files that contain .hash sections. The paths may contain regular expressions
diff --git a/man/make.conf.5 b/man/make.conf.5
index 76adfe2ce..f9d69b71b 100644
--- a/man/make.conf.5
+++ b/man/make.conf.5
@@ -814,6 +814,10 @@ settings from ebuilds.  See also \fBebuild\fR(5).
 Set this to cause portage to ignore any \fIQA_TEXTREL\fR override
 settings from ebuilds.  See also \fBebuild\fR(5).
 .TP
+\fBQA_STRICT_DT_SWITCHES = \fI"set"\fR
+Set this to cause portage to ignore any \fIQA_DT_SWITCHES\fR override
+settings from ebuilds.  See also \fBebuild\fR(5).
+.TP
 \fBQA_STRICT_DT_HASH = \fI"set"\fR
 Set this to cause portage to ignore any \fIQA_DT_HASH\fR override
 settings from ebuilds.  See also \fBebuild\fR(5).
-- 
cgit v1.2.3-1-g7c22